Note: After the mower is installed, take a piece of paper to test. If the hob can successfully cut the paper, it means that the installation is successful and works normally. If you are unable to cut the grass or it is very difficult to cut the grass, you can adjust the blade, adjust the screw in the picture with a wrench, and then take a piece of paper to re-test. If you can cut the paper, it means you have adjusted. As the blade is sharp, be careful not to touch the blade with your hands to avoid cutting your fingers. It is best to place the mower out of the reach of children.